function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alekseev, Vitalii I. & Bukejs, Andris', 1],
    ['Borges, Paulo A. V. & Gaspar, Clara', 2],
    ['Bouchard, Patrice & Bousquet, Yves & Davies, Anthony E.', 1],
    ['Bousquet, Yves', 4],
    ['Bukejs, Andris & Alekseev, Vitalii I.', 2],
    ['Gimmel, Matthew L. & Leschen, Richard A. B.', 3],
    ['Grouvelle, A.', 2],
    ['Guo, Mingxia & Xing, Lida & Wang, Bo & Zhang, Weiwei', 3],
    ['Mcelrath, Thomas C. & Mchugh, Joseph V.', 14],
    ['Meurgey, François & Ramage, Thibault', 2],
    ['Peck, Stewart B.', 3],
    ['Stefanelli, Silvia & Della Rocca, Francesca & Bogliani, Giuseppe', 4],
    ['V, Alexey & V, Alexander & Barševskis, Arvids', 2],
    ['Webster, Reginald P. & Sweeney, Jon D. & DeMerchant, Ian', 4],
    ['Webster, Reginald P. & Webster, Vincent L.', 2],
    ['Other (6)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=55)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);